[PATCH 0/3] gpio: Introduce gpio-delay driver and enable it on Kria

Michal Simek
2026-01-22T12:50:52Z

Hi,

we need to wait more time for getting USB hub out of reset to be able to do
initialiation over i2c that's why use gpio-delay driver instead of changing
waiting time in usb hub driver. Waiting time depends on gpio wiring on the
board which is in some of our case going via SLG programmable device.

Thanks,
Michal

Michal Simek (3):
gpio: Add GPIO delay driver
xilinx: Enable GPIO delay driver on Kria platforms
arm64: zynqmp: Wire gpio-delay driver for USB hub reset

arch/arm/dts/zynqmp-sck-kd-g-revA.dtso | 13 ++-
arch/arm/dts/zynqmp-sck-kr-g-revA.dtso | 16 ++-
arch/arm/dts/zynqmp-sck-kr-g-revB.dtso | 16 ++-
arch/arm/dts/zynqmp-sck-kv-g-revA.dtso | 13 ++-
arch/arm/dts/zynqmp-sck-kv-g-revB.dtso | 11 +-
configs/xilinx_zynqmp_kria_defconfig | 1 +
drivers/gpio/Kconfig | 8 ++
drivers/gpio/Makefile | 1 +
drivers/gpio/gpio-delay.c | 133 +++++++++++++++++++++++++
9 files changed, 196 insertions(+), 16 deletions(-)
create mode 100644 drivers/gpio/gpio-delay.c

--
2.43.0

base-commit: 1b94b48043bd77fcb837704cba4385e14a4a694e
branch: debian-sent3